A. X
B. Y
C. Z
D. U
If the nth term of an A.P. is 4n + 1, then the common difference is
1, 1, 3/4 ,1/2,5/16,.........................,
0, 11, 26, 45, .
80, 75, 65, 50, .
4, 9, 20, 43, 90, .
f(6, 4) equals to
1W 2V 3U 5T ? 13R
HV GT FR EP DN ?
I M Q ?
258 130 66 ? 18 10